The instigators of the bus tour, PBS talk show host Tavis Smiley and Princeton professor Cornel West, did the nation a favor by turning the spotlight onto the very real needs of poor Americans. They feel "invisible" and "disposable," Smiley said during the tour, which ran from Minnesota to Memphis, Tenn.

The sentiment is not surprising. The poor have been left behind by what little economic recovery there has been since the 2008 crash. And in Washington's deficit-obsessed political climate, the talk is all about slashing government — not poverty rates.

Millions of people are without jobs, homes or hopeful futures. Minorities are disproportionately afflicted: Blacks and Hispanics experience unemployment and poverty at far higher rates than the rest of the population does. [...]

[T]he "Call to Conscience" tour was constructive because it pushed the problem of poverty back into the center of a national conversation that had been hijacked by fiscal hawks who see only the cost, not the value, of government.

Unlike the abstractions of long-term deficit projections, poverty is a tangible, here-and-now reality. The country waged a "war on poverty" in the 1960s, but the problem — fed by structural changes in the U.S. economy, policy choices, social shifts and other factors — grew in ensuing decades. Unfair mortgage practices and the epic recession triggered in 2008 exacerbated the trend, wiping out years of progress.

Today, disparities in income, educational attainment, home ownership and family wealth are growing. The rich are getting richer, while the ranks of the poor are poised to expand as government shrinks and job creation remains stagnant.

Rich vs. poor inequities, and the hopelessness that can accompany them, are poisonous to democracy. In the final analysis they are likely to be every bit as destructive, if not more so, than large budget deficits.

Nearly 15 percent of the population — including an estimated 15 million children — live below the federal poverty line, which is about $22,500 a year for a household of four. "Research shows that, on average, families need an income of about twice that level to cover basic expenses," according to the National Center for Children in Poverty, of the Mailman School of Public Health, Columbia University.

"Using this standard, 42 percent of children live in low-income families," the organization reported. Rates are highest among black, Latino, and American Indian children, data show. [...]

A nation that looks to tax cuts and budget slashing as the answer to 44 million living in deep poverty — many with little hope of overcoming it — is either deluded or uncaring.

Neither of those terms represents the America we know and love.

We are a nation based on the principles of equality and opportunity. Let's live up to them by confronting the factors that lead to entrenched poverty.

Promoting "personal responsibility" is an important key to this challenge. But so is government, which can help communities get through the worst of times and build better foundations for the future.

Economic growth that provides jobs for unemployed and underemployed Americans is vital. But we must not pretend that poverty can be reduced by putting government on a starvation diet.

The issue of poverty belongs at the center of the nation's political priorities, not at the fringe. Smiley and West raised its profile. Their bus tour has ended, but we hope that a new era of understanding has begun.